User:LuoSean/sandbox

Let's get started Dengue fever is an infectious disease caused by the dengue virus in the tropical regions. It is transmitted by mosquito Aedes, or A aegypti. The first record of a case of probable dengue fever is in a Chinese medical encyclopedia from the Jin Dynasty (265–420 AD) which referred to a "water poison" associated with flying insects.[40][41] There have been descriptions of epidemics in the 17th century, but the most plausible early reports of dengue epidemics are from 1779 and 1780, when an epidemic swept Asia, Africa and North America.[41] From that time until 1940, epidemics were infrequent.[41] In 1906, transmission by the Aedes mosquitoes was confirmed, and in 1907 dengue was the second disease (after yellow fever) that was shown to be caused by a virus.[42] Further investigations by John Burton Cleland and Joseph Franklin Siler completed the basic understanding of dengue transmission.[42] The marked spread of dengue during and after the Second World War has been attributed to ecologic disruption. The same trends also led to the spread of different serotypes of the disease to new areas, and to the emergence of dengue hemorrhagic fever. This severe form of the disease was first reported in the Philippines in 1953; by the 1970s, it had become a major cause of child mortality and had emerged in the Pacific and the Americas.[41] Dengue hemorrhagic fever and dengue shock syndrome were first noted in Central and South America in 1981, as DENV-2 was contracted by people who had previously been infected with DENV-1 several years earlier.[12] There are four different types of virues in Dengue fever.If someone is infected with one type of Dengue virus, he or she will have permanent immunity to that type of Dengue virus, but will have short term immunity to the other type of Dengue fever. The symptoms of Dengue fever are fever, headache,muscle and joint pains and skin rash. Some dengue fever cases can give rise to serious dengue hemorrhagic fever. Dengue hemorrhagic fever is bleeding with low levels of blood platelets and blood plasma leakage. Some dengue fever cases also develop into dengue shock syndrome, resulting low blood pressure. Treatment of actue dengue is to use oral or intravenous rehydration for mild cases. Intravenous fluids and blood transfusion are used for treatment of more severe cases. There is no vaccine for Dengue fever right now. We can only get rid of mosquitoes and clear out the habitat of mosquitoes and stop exposure to bites.The cases of Dengue fever increased 30 fold between 1960 and 2010. This diesease is believed to be due to a combination of urbanization, population growth, increased international travel, and global warming[4] Reference: 1Anonymous (2006). "Etymologia: dengue". Emerg. Infec. Dis. 12 (6): 893. . 2Gubler DJ (July 1998). "Dengue and dengue hemorrhagic fever". Clin. Microbiol. Rev. 11 (3): 480–96. ..

3 Henchal EA, Putnak JR (October 1990). "The dengue viruses". Clin. Microbiol. Rev. 3 (4): 376–96. . . . 4 Gould EA, Solomon T (February 2008). "Pathogenic flaviviruses". The Lancet 371 (9611): 500–9. . 5WHO (2009), p. 3. 6 Whitehorn J, Farrar J (2010). "Dengue". Br. Med. Bull. 95: 161–73. ..